XML 87 R65.htm IDEA: XBRL DOCUMENT v3.20.4
Stock-Based Compensation - Summary of Stock Options Activity Under Plans and Agreement (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 12 Months Ended
Dec. 27, 2020
Dec. 29, 2019
Dec. 30, 2018
Dec. 31, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]        
Options outstanding shares, beginning balance 1,774 2,150 3,309  
Options, granted     203  
Exercise of stock warrants, shares   (22) (993)  
Options, canceled (541) (354) (369)  
Options outstanding shares, ending balance 1,233 1,774 2,150 3,309
Options outstanding shares, exercisable 1,217      
Options outstanding weighted average exercise price, beginning balance $ 11.34 $ 11.49 $ 10.71  
Options, weighted average exercise price, granted     11.27  
Options, weighted average exercise price, exercised   7.93 8.30  
Options, weighted average exercise price, canceled 12.84 12.45 13.63  
Options outstanding weighted average exercise price, ending balance 10.68 $ 11.34 $ 11.49 $ 10.71
Options outstanding weighted average exercise price, exercisable $ 10.65      
Options outstanding aggregate intrinsic value     $ 378 $ 7,699
Option outstanding weighted average remaining term 2 years 5 months 26 days 4 years 3 months 29 days 5 years 1 month 17 days 4 years 10 months 24 days
Options exercisable weighted average remaining term 2 years 5 months 4 days